Su­doku

How it works: Su­doku puz­zles are for­mat­ted as a 9X9­grid, bro­ken down into nine 3X3boxes. To solve a su­doku, the num­bers 1through 9must fill each row, col­umn and box. Each num­ber can ap­pear only once in each row, col­umn and box. You can fig­ure out the order in which the num­ber will ap­pear by us­ing the nu­meric clues al­ready pro­vided in the boxes. The more num­bers you name, the eas­ier it gets to solve the puz­zle.